Siemens Sinamics S120 Function Manual page 321

This is carried out by means of a variable-speed pump in conjunction with a sensor for
measuring the level.
The level is determined via an analog input (e.g. AI0 on TB30) and sent to the technology
controller. The level setpoint is defined in a fixed setpoint. The resulting controlled variable is
used as the setpoint for the speed controller.
In this example, a Terminal Board 30 (TB30) is used.
Figure 7-1
Figure 7-2 Fill level control: Controller structure
Table 7- 1 Important parameters for the level control
Parameter
p1155 n_setp1 downstream of RFG
p2200 BI: Technology controller enable
p2253 CI: Technology controller setpoint 1
p2263 Technology controller type
p2264 CI: Technology controller actual value
(X
ACTUAL
p2280 Technology controller p-gain
p2285 Technology controller integral action time
Drive functions
Function Manual, (FH1), 01/2012, 6SL3097-4AB00-0BP2
Fill level control: Application
Designation
)
Example
p1155 = r2294 Tec_ctrl output_sig [3080]
p2200 = 1 Technology controller enabled
p2253 = r2224 Fixed setpoint active [7950]
p2263 = 1 D component in fault signal [7958]
p2264 = r4055 [1] Analog input AI1 of TB30
p2280 Determine by optimization
p2285 Determine by optimization
Function modules
7.1 Technology controller
319